Selection bias. The ones who come here legally are coming here specifically because they are the kinds of people who work hard and are industrious. That isn’t rewarded in their backward banana-socialist homeland.
Look, you know as well as I, for every legal one that comes here legitimately, there are 300 illegals.
Why come here legally, wait years, when you can just walk in and get hired by the greedy employers, that love low wage labor?
You think employers would rather hire a legal, or hire an illegal, for a fraction of the money? Get real.